Download A Cybernetic View of Biological Growth: The Maia Hypothesis by Tony Stebbing PDF

By Tony Stebbing

Maia is the tale of an concept, and its improvement right into a operating speculation, that gives a cybernetic interpretation of ways progress is managed. development on the lowest point is managed via regulating the speed of development. entry to the output of regulate mechanisms is supplied by means of perturbing the starting to be organism, after which filtering out the results to progress fee. The output of the expansion keep an eye on mechanism is then available for interpretation and modeling. Perturbation experiments were used to supply interpretations of hormesis, the neutralization of inhibitory load and bought tolerance to poisonous inhibition, and catch-up development. The account starts with an creation to cybernetics masking the legislation of progress and inhabitants raise in animals and guy and describes this new method of entry the regulate of development methods. This ebook is appropriate for postgraduate scholars of organic cybernetics and researchers of organic progress, endocrinology, inhabitants ecology and toxicology.

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Apart from his study of regeneration in Hydra, Trembley was able to demonstrate the incredible flexibility of its primitive organisation. When a polyp was turned inside out on a pig’s bristle, it could reorganise its two layers of cells within 48 hours. By everting the polyp, the endoderm cells were on the outside and the ectoderm on the inside, but they rapidly reverted to normal and the polyp was able to function as before. He also carried out early grafting experiments by tying two polyps together with a single hair.

The first not only wins, but it also denies other competitors the prize. The annual competition for space on the spaces on rocky shores is mostly won by colonial species, simply because the exponential growth of bryozoans, hydroids and tunicates enables them to cover the available space more rapidly than solitary species can. SELF-LIMITING POPULATIONS? The overwhelming observation that we are left with is that exponential growth is a double-edged sword. It is adaptive in its early stages, but becomes increasingly maladaptive as growth rates accelerate.

Again we see a homeodynamic system which operates as a repair mechanism, with the goal of complete genetic fidelity. Overpopulation by mankind has long been perceived as a pressing problem for humanity, but it is rarely asked how it is that other highly evolved species regulate their density and numbers, while our own species does not (Chapter 13). Given the control of replication and reproduction at all levels of biological organisation, how is it that modern man has not retained the control mechanisms of his biological ancestors?

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